US4631207A
Expired / Lapsed
US
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Siloxane compositions and process for treatment of materials
Assignee: Dow Silicones UK Ltd
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Filing: 1985-12-13
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Granted: 1986-12-23
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Expires: 2005-12-13
Abstract
Abstract A siloxane treating composition comprises (1) a mixture and/or a reaction product of (A) a polydiorganosiloxane having at least one silicon-bonded --OX group, X being H, alkyl or alkoxyalkyl and at least one silicon-bonded aminoalkyl or polyaminoalkyl acid salt group, and (B) a silicon compound having more than 2 silicon-bonded groups which are reactive with --OX of (A), and (2) a water-soluble solvent for (A) which comprises one or both glycol ethers of the formula C 4 H 9 --O--(CH 2 --CH 2 --O) n H where n is 1 or 2. These compositions have improved penetration ability and stability, especially when used as aqueous composition for rendering substrates, such as masonry, hydrophobic. Also claimed is a process for making such compositions and a process for applying them to substrates.
Inventors
- 👤 John G. C. Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:54
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961; C04B41/60; C04B41/61; C04B41/62; C04B41/64; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/54; C08L; C08L83/00; C08L83/04; C08L83/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
184 words
Compositions comprising (1) a component selected from the group consisting of mixtures and reaction products of (A), a polydiorganosiloxane having a molecular weight of at least 350 and at least one silicon-bonded --OX group, wherein X represents a group selected from a hydrogen atom, an alkyl group or an alkoxyalkyl group, the said polydiorganosiloxane having at least one silicon-bonded substituent selected from aminoalkyl and polyaminoalkyl acid salt groups derived from a water-soluble organic or inorganic acid, at least 0.5% by weight of the polydiorganosiloxane being provided by amino nitrogen, at least 40% of the total number of silicon-bonded substituents in the polydiorganosiloxane being methyl groups and any remaining substituents being monovalent hydrocarbon groups having from 2 to 10 carbon atoms, and (B) a silicon compound which is soluble in (2) and which has per molecule more than 2 silicon-bonded groups reactive with the --OX groups in (A), and (2) a water-soluble solvent for (A) which comprises at least one glycol ether of the formula C 4 H 9 --O--(CH 2 --CH 2 --O) n H, where n has a value of 1 or 2.
Claim 2
Dependent Claim
184 words
Compositions comprising (1) a component selected from the group consisting of mixtures and reaction products of (A), a polydiorganosiloxane having a molecular weight of at least 350 and at least one silicon-bonded --OX group, wherein X represents a group selected from a hydrogen atom, an alkyl group or an alkoxyalkyl group, the said polydiorganosiloxane having at least one silicon-bonded substituent selected from aminoalkyl and polyaminoalkyl acid salt groups derived from a water-soluble organic or inorganic acid, at least 0.5% by weight of the polydiorganosiloxane being provided by amino nitrogen, at least 40% of the total number of silicon-bonded substituents in the polydiorganosiloxane being methyl groups and any remaining substituents being monovalent hydrocarbon groups having from 2 to 10 carbon atoms, and (B) a silicon compound which is soluble in (2) and which has per molecule more than 2 silicon-bonded groups reactive with the --OX groups in (A), and (2) a water-soluble solvent for (A) which comprises at least one glycol ether of the formula C 4 H 9 --O--(CH 2 --CH 2 --O) n H, where n has a value of 1 or 2.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 wherein the water-soluble solvent also comprises methanol in a weight ratio methanol to glycol ether of from 1:2 to 1:4.
Claim 4
Dependent Claim
41 words
A composition according to claim 1 wherein polydiorganosiloxane (A) has a molecular weight within the range from 800 to 3000, from 0.75 to 2.5% by weight of amino nitrogen and the --OX groups in (A) are attached to terminal silicon atoms.
Claim 5
Dependent Claim
55 words
A composition according to claim 1 wherein the polyaminoalkyl group of the polyorganosiloxane (A), from which an acid group is derived, is selected from the group of polyaminoalkyl radicals consisting of --(CH 2 ) 3 NH(CH 2 ) 2 NH 2 and --CH 2 CH(CH 3 )CH 2 NH(CH 2 ) 2 NH 2 .
Claim 6
Dependent Claim
62 words
A composition according to claim 1 wherein (B) is a silane, a partial hydrolyzate of said silane, or a condensate of said silane, wherein said silane is of the general formula RSiY 3 , in which R denotes alkyl, alkenyl, aryl, alkoxy, or alkoxyalkoxy groups and Y denotes alkoxy or alkoxyalkoxy groups, R and Y each having less than 7 carbon atoms.
Claim 7
Dependent Claim
14 words
A composition according to claim 1 which also comprises free organic or inorganic acid.
Claim 8
Dependent Claim
10 words
A composition according to claim 1 which also comprises water.
Claim 9
Dependent Claim
47 words
A process for the preparation of compositions of the kind claimed in claim 1 wherein a mixture of polydiorganosiloxane (A) and silicon compound (B) is heated in the presence of water-soluble solvent (2) to an elevated temperature, (A), (B) and (2) being as defined in claim 1.
Claim 10
Dependent Claim
41 words
A process according to claim 8 wherein polydiorganosiloxane (A) has a molecular weight within the range from 800 to 3000, from 0.75 to 2.5% by weight of amino nitrogen and the --OX groups in (A) are attached to terminal silicon atoms.
Claim 11
Dependent Claim
20 words
A process for rendering a substrate hydrophobic which comprises applying thereto a composition of the kind claimed in claim 1.
Claim 12
Dependent Claim
11 words
A process according to claim 10 wherein the substrate is masonry.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |